若二氧化硫气体与三氧化硫气体中硫元素的质量比为5:1,则二氧化硫和三氧化硫的质量比是 请选择DCBA1s;D;V2h7X1h4?9A-h)n;x*j1V'k,H8v2V:w([/r3w-K5H'V't
A.1:1,H8v2V:w([/r3w-K5H'V't
B.4:5,H8v2V:w([/r3w-K5H'V't
C.4:1,H8v2V:w([/r3w-K5H'V't
D.2:5,H8v2V:w([/r3w-K5H'V't